根据微条气体室(MSGC)探测器的工作原理,分析了MSGC基板的选择依据,同时首次提出采用金刚石膜/硅复合材料作为MSGC基板的可行性.采用热丝辅助化学气相沉积(HFCVD)技术和相关退火工艺获得了金刚石膜/硅复合材料,并采用SEM、Raman光谱仪、微电流仪对复合材料的表面状况、结构、I-V和C-F特性进行了表征.结果表明,该复合材料经抛光后表面平整,退火后电阻率达约2.9×1010Ω·cm,电容值小且随频率变化稳定,均满足MSGC对基板材料的要求.
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